Qt包含QtCharts/QValueAxis时编译报错

Kelvin_Ngan2025-12-17 9:41

Qt 5.9，windows

#include <QtCharts/QValueAxis>

包含该文件后编译报错

bash 复制代码

1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(60): warning C4003: "min"宏的实参不足 
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(60): error C2059: 语法错误:"<L_TYPE_raw>" 
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(60): error C2334: ":"的前面有意外标记；跳过明显的函数体 
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(62): warning C4003: "max"宏的实参不足 
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(88): error C2143: 语法错误 : 缺少")"(在";"的前面) 
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(88): error C2059: 语法错误:")"
1>c:\qt\qt5.9.7\5.9.7\msvc2013_64\include\qtcharts\qvalueaxis.h(88): error C2238: 意外的标记位于";"之前

cpp 复制代码

class QT_CHARTS_EXPORT QValueAxis : public QAbstractAxis
{
    Q_OBJECT
    Q_PROPERTY(int tickCount READ tickCount WRITE setTickCount NOTIFY tickCountChanged)
    Q_PROPERTY(qreal min READ min WRITE setMin NOTIFY minChanged)
    Q_PROPERTY(qreal max READ max WRITE setMax NOTIFY maxChanged)
    Q_PROPERTY(QString labelFormat READ labelFormat WRITE setLabelFormat NOTIFY labelFormatChanged)
    Q_PROPERTY(int minorTickCount READ minorTickCount WRITE setMinorTickCount NOTIFY minorTickCountChanged)

public:
    explicit QValueAxis(QObject *parent = Q_NULLPTR);
    ~QValueAxis();

protected:
    QValueAxis(QValueAxisPrivate &d, QObject *parent = Q_NULLPTR);

public:
    AxisType type() const;

    //range handling
    void setMin(qreal min);
    qreal min() const;  //此处跟全局宏冲突
    void setMax(qreal max);
    qreal max() const;  //此处跟全局宏冲突
    void setRange(qreal min, qreal max);

原因是windows定义的min和max宏污染

解决办法：项目属性-C\C+±预处理器定义-添加宏NOMINMAX